58
A01-00119 Rev. B
No. Phenomena
Possible Reason
9
AC input is present,
but the buzzer beeps
discontinuously, mains
indicator is off.
Voltage or frequency of mains exceeds the
range of UPS.
10
Under mains status,
the UPS works
normally; however,
after power outage, the
UPS work normally but
the device halt.
Bad grounding connection causes the float
voltage between neutral wire and grounding
wire is too high.
11
All the indicators on the
panel of the UPS are
not light on.
The connection of display control board of the
UPS is bad or failure.
5.3 Emergency Troubleshooting
• Emergency remedy single unit fault.
When the single-unit fault, it is necessary to close the power
supply of UPS by OFF button on the panel. If necessary, close the
user load, and disconnect the input/output switch of UPS, which is
to avoid further damage of the UPS.
• Emergency remedy for the fault of UPS 1 and UPS 2 in series
backup system.
When the UPS 1 of the series backup system fault, it is necessary
to close the power supply of UPS1 by OFF button on the panel.
At the same time, disconnect the mains input switch and battery
switch of UPS 1 (UPS1 or battery cabinet). Cal for service.
When the UPS 2 fault, it is necessary to close the power supply of
UPS2 by OFF button on the panel. At the same time, disconnect
the mains input switch and battery switch of UPS 2 (UPS2 or
battery cabinet). Call for service.
Summary of Contents for Powervar 3400 Series
Page 1: ...3400 Series UPS User s Manual 80 100 125kVA ...
Page 9: ...9 A01 00119 Rev B Tools Tools ...
Page 26: ...26 A01 00119 Rev B Figure 2 5 Normal System operation Figure 2 6 System on battery ...
Page 64: ...64 A01 00119 Rev B 9 0 PRODUCT DRAWINGS ...
Page 65: ...65 A01 00119 Rev B ...
Page 66: ...66 A01 00119 Rev B ...
Page 67: ...67 A01 00119 Rev B ...